Hello,

First time use emWin graphics library. hope you could give me a help, Thanks.

Our project use Microchip company MCU PIC32MZ, LCD display controller is HX8352 ( use 8080 CPU interface, 8 bits parallel port, CSn, WRn, RDn, C/Dn) .
According to HX8352, I should use EmWin display driver GUIDRV_FlexColor, so I wrote the codes in LCD_X_Config(), see below. But after running the LCD_X_Config(), the whole system will restart, I cannot find out the reason ?


void LCD_X_Config(void)
{
GUI_PORT_API PortAPI = {0};
CONFIG_FLEXCOLOR Config = {0};
GUI_DEVICE * pDevice;


pDevice = GUI_DEVICE_CreateAndLink(GUIDRV_FLEXCOLOR, GUICC_565, 0, 0);

LCD_SetSizeEx (0, XSIZE_PHYS, YSIZE_PHYS);
LCD_SetVSizeEx(0, XSIZE_PHYS, YSIZE_PHYS * NUM_VSCREENS);

Config.FirstCOM = 0;
Config.FirstSEG = 0;
Config.Orientation = DISPLAY_ORIENTATION;
//Config.RegEntryMode = 0;
Config.NumDummyReads = 2;
GUIDRV_FlexColor_Config(pDevice, &Config);

PortAPI.pfWrite8_A0 = w_com;
PortAPI.pfWrite8_A1 = w_dat;

GUIDRV_FlexColor_SetFunc(pDevice, &PortAPI, GUIDRV_FLEXCOLOR_F66712, GUIDRV_FLEXCOLOR_M16C1B8); // HX8352 with 16bpp, cache, 8 bit bus
}

Thank you so much!

According to your suggestion, I changed to HX8352B
GUIDRV_FlexColor_SetFunc(pDevice, &PortAPI, GUIDRV_FLEXCOLOR_F66715, GUIDRV_FLEXCOLOR_M16C0B8);

added new PortAPI.pfWriteM8_A1 = LcdWriteDataMultiple;

Never restart system, Thanks! But still cannot display graphics correctly (even background color).

So I debug my software step by step, found, emWin GUI call write_ command (index of register) twice { the first one alway 0x00}, but write_data only once.
I confuse for this: HX8352B use 8 bits parallel port, should write command (index of register) once (for example 0x02 register), write data maybe twice, if you emWin use 16 bits. Is right?

Besides, for HX8352, I use 8080 CPU 8 bits parallel II (DB0-DB8, CSn, WRn, RDn, C/Dn), not use 4/4 wires Serial interface, not use SPI(2), HSIM interface. So Is it OK for GUIDRV_FlexColor?

Hi,

It works now. A little bug in write multiple data.

Thanks